EP0017642B1 - Montage d'allumage d'un pont de thyristor par impulsion double conformément aux deux ordres de phase possibles d'un circuit triphasé - Google Patents

Montage d'allumage d'un pont de thyristor par impulsion double conformément aux deux ordres de phase possibles d'un circuit triphasé Download PDF

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Publication number
EP0017642B1
EP0017642B1 EP19800890015 EP80890015A EP0017642B1 EP 0017642 B1 EP0017642 B1 EP 0017642B1 EP 19800890015 EP19800890015 EP 19800890015 EP 80890015 A EP80890015 A EP 80890015A EP 0017642 B1 EP0017642 B1 EP 0017642B1
Authority
EP
European Patent Office
Prior art keywords
phase
pulse
thyristor bridge
rotating field
rotation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP19800890015
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German (de)
English (en)
Other versions
EP0017642A1 (fr
Inventor
Heinrich Dipl.-Ing. Jelinek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Andritz Hydro GmbH Austria
Original Assignee
Andritz Hydro GmbH Austria
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3502499&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0017642(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Andritz Hydro GmbH Austria filed Critical Andritz Hydro GmbH Austria
Publication of EP0017642A1 publication Critical patent/EP0017642A1/fr
Application granted granted Critical
Publication of EP0017642B1 publication Critical patent/EP0017642B1/fr
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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/145—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M7/155—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M7/162—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only in a bridge configuration
    • H02M7/1623—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only in a bridge configuration with control circuit

Definitions

  • the invention relates to a circuit arrangement for consequent double pulse ignition in a fully controlled thyristor bridge for both rotating field directions, which are determined by the three-phase AC voltage that feeds the thyristor bridge, a control transformer, three low-pass filters, three pulse control sets and a logic logic being provided.
  • a fully controlled thyristor bridge circuit requires double firing pulses for the starting process and in intermittent operation. This means that a subsequent pulse is required for the main pulse of the thyristor in order to make the required thyristors conductive at the time of commutation.
  • the second pulse must follow 60 ° later.
  • the thyristor R + in the three-phase three-phase bridge for example, must receive its second pulse simultaneously with the firing pulse of the thyristor T-. It is therefore common to use the firing pulse from T- as the second pulse for R + .
  • This so-called double firing pulse linkage can take place in a diode matrix, which, however, only works correctly for a certain direction of rotation of the feeding multi-phase AC voltage.
  • the wrong firing of the double firing pulse will in any case lead to misfiring of the thyristors, since the double firing pulses occur at completely different times than with a three-phase, fully controlled three-phase bridge, e.g. B. 60 ° before the ignition pulse. As a result, the control of the rectified AC voltage no longer works.
  • the incoming multi-phase AC voltage must already be wired in the connector for clockwise rotating field according to the regulations, so the double ignition pulse assignment to the thyristor bridge can already be designed for clockwise rotating field.
  • the object of the present invention is therefore to create a circuit which carries out the double ignition pulse linkage for the different directions of rotation of the three-phase AC voltage which feeds a fully controlled thyristor bridge independently and without external intervention.
  • control transformer on the feed side of the thyristor bridge is connected in a triangle and secondarily in star, and in that the low-pass filter for the supplying mains frequency, which lies in each phase between the secondary side of the control transformer and the pulse control sets, has a phase shift of 60 ° exhibit.
  • the fact is based on the fact that the OR combination for the subsequent pulse formation creates the possibility of the grid control unit that is used for positive ver direction of rotation has delivered the subsequent pulse to the input of the OR gate, to have the main pulse delivered in the negative direction of rotation.
  • the interaction of the control transformer and the downstream low-pass filter is to take place in such a way that a certain grid control unit delivers a follow-up pulse to a certain thyristor in one direction of rotation, but a main pulse in the opposite direction.
  • swapping the supply on two terminals of a three-phase system means reversing the direction of rotation with the same terminal designation, which corresponds to a clockwise rotation of the same pointer diagram with the same designation of the terminal voltages.
  • a negative voltage zero crossing becomes a positive one (with regard to the mode of operation of the grid control modules, which set their time stamps to 0 ° during positive zero crossings, a reversal of the direction of rotation corresponds to a phase rotation of 180 °)
  • a commutation point becomes a natural (up) commutation point.
  • the ignition pulse becomes the main pulse.
  • a certain lattice control module brings to a particular ignition amplifier by suitable phase shifts due to a suitable switching group and filter phase rotation by 60 ° to the right, this must apply to all ignition pulses, since the switching group and filter phase shifts apply to all occurring ones Voltages are effective together, so the pulse pattern required for the changed direction of rotation is produced.
  • Fig. 1 shows the basic circuit diagram
  • Fig. 2 shows the timing diagram of the double ignition pulses.
  • the three-phase supply is carried out at the terminals R, S, T.
  • the control transformer 1 and an embodiment of a fully controlled thyristor bridge with the thyristors R + , R-, S + , S-, T + , T- are connected to it.
  • the control transformer 1 galvanically isolates the feed side from the control electronics.
  • the three low-pass filters 2 are used to screen disturbing high-frequency interference from harmonics.
  • the output of the low-pass filter 2 controls the pulse control sets 3, which emit two pulses + or - in each control voltage period, which are combined in a logic logic 4 to form double ignition pulses R + , R - , S + , S - , T + , T - will.
  • FIG. 2A shows the time diagram of the double firing pulses of the thyristors R + , R - , S + , S - , T + , T - for clockwise rotating supply network and
  • FIG. 2B shows the time diagram for counterclockwise rotating supply network.
  • the double firing pulses of each thyristor are electrically offset by 60 °.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Electrical Variables (AREA)
  • Power Conversion In General (AREA)

Claims (1)

  1. Disposition de circuit pour l'allumage correct par impulsions doubles, dans un pont à thyristors entièrement commandé pour les deux sens du champ tournant, qui sont fixées par la tension alternative triphasée alimentant le pont à thyristors, comportant un transformateur de commande (1), trois filtres passe-bas (2), trois dispositifs de commande d'impulsions (3) et un circuit logique combinatoire (4), caractérisée par le fait que le transformateur de commande (1) est relié en triangle au côté d'alimentation du pont à thyristors et en étoile du côté secondaire et que les filtres passe-bas (2) situés dans chaque phase entre le côté secondaire du transformateur de commande (1) et les dispositifs de commande d'impulsions (3), présentent, pour la fréquence du réseau d'alimentation, un déphasage de 60°.
EP19800890015 1979-02-07 1980-02-07 Montage d'allumage d'un pont de thyristor par impulsion double conformément aux deux ordres de phase possibles d'un circuit triphasé Expired EP0017642B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT90379A AT364030B (de) 1979-02-07 1979-02-07 Schaltungsanordnung zur folgerichtigen doppelimpulszuendung
AT903/79 1979-02-07

Publications (2)

Publication Number Publication Date
EP0017642A1 EP0017642A1 (fr) 1980-10-15
EP0017642B1 true EP0017642B1 (fr) 1983-06-29

Family

ID=3502499

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800890015 Expired EP0017642B1 (fr) 1979-02-07 1980-02-07 Montage d'allumage d'un pont de thyristor par impulsion double conformément aux deux ordres de phase possibles d'un circuit triphasé

Country Status (3)

Country Link
EP (1) EP0017642B1 (fr)
AT (1) AT364030B (fr)
DE (1) DE3063936D1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4797802A (en) * 1987-12-03 1989-01-10 Sundstrand Corp. Multiple phase rectifier with active filter for removing noise in triggering signals and digital phase shift compensator for phase shifting signal passed through

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1563385B2 (de) * 1966-08-06 1975-08-28 Siemens Ag, 1000 Berlin Und 8000 Muenchen Zündsteuersatz für eine mehrpulsige Strom richterschaltung

Also Published As

Publication number Publication date
ATA90379A (de) 1980-02-15
AT364030B (de) 1981-09-25
DE3063936D1 (en) 1983-08-04
EP0017642A1 (fr) 1980-10-15

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